The new AO uniform looks more practical than the original chioce. Removing inconveniently located stains from the original colours in order to look presentable for the remainder of a duty must have been a nightmare.
I also think it's a good move to have some connection to the image of the parent company, Qantas. The pants seem to be the same as ours (ie Qantas/link) which makes good economic sense.
I'm not sure about the end result, though. The guys and girls in the photos look a bit too much like parking lot attendants. No offense to the AO crews who will be wearing the uniform.